Viejita Apisto lays their eggs in caves, on roots or on the leaves. The female lays a smallish number of eggs. The female guards the eggs and the fry while the male guards his territory which may contain several females with fry.

The male Viejita Apisto exhibits longer anterior dorsal membrane. The anal fin of males are elongated while the female's anal fin are usually rounded. The ventral fins of matured males are longer than female's. Mature females exhibit a yellowish belly.